EP0207458B1 - Disjoncteur - Google Patents

Disjoncteur Download PDF

Info

Publication number
EP0207458B1
EP0207458B1 EP86108763A EP86108763A EP0207458B1 EP 0207458 B1 EP0207458 B1 EP 0207458B1 EP 86108763 A EP86108763 A EP 86108763A EP 86108763 A EP86108763 A EP 86108763A EP 0207458 B1 EP0207458 B1 EP 0207458B1
Authority
EP
European Patent Office
Prior art keywords
arc
rise
conductor
circuit breaker
fixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86108763A
Other languages
German (de)
English (en)
Other versions
EP0207458A3 (en
EP0207458A2 (fr
Inventor
Shiro C/O Fukuyama Seisakusho Murata
Fumiyuki C/O Fukuyama Seisakusho Hisatsune
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OFFERTA DI LICENZA AL PUBBLICO
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP10200885U external-priority patent/JPS629338U/ja
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP0207458A2 publication Critical patent/EP0207458A2/fr
Publication of EP0207458A3 publication Critical patent/EP0207458A3/en
Application granted granted Critical
Publication of EP0207458B1 publication Critical patent/EP0207458B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns

Definitions

  • the present invention relates generally to a circuit breaker, and particularly to a circuit breaker having an arc extinguisher and an arc runner which is disposed on both sides of fixed contact point, according to the pre-characterizing part of claim 1.
  • FIG.3 is a partially sectional side view of a prior art circuit breaker as described in the Japanese patent application Sho 59-169391 (Japanese unexamined published patent application Sho 61-49338 published on 11.3.86), and FIG.3A is a perspective view showing a principal part of this prior art circuit breaker.
  • the circuit breaker of the prior art comprises a fixed conductor 1 having a fixed contact point 1A on one end thereof, an arc runner 2 fixed to the fixed conductor 1, a moving conductor 4 having a moving contact point 4A on the moving end part, or in other words, near the moving end, of the moving conductor 4, and an arc extinguisher 5.
  • the fixed conductor 1 has a curved part 1c consisting of an intermediate part 11a and a rise up part 11b.
  • the upper end of the rise up part 11b is integrally connected to a power source side lead 1b.
  • the fixed contact point 1A is electro-conductively fixed on an elevated holder part 1a of the fixed conductor 1.
  • the elevated holder part 1a and the intermediate part 11a are formed integrally.
  • the arc runner 2 comprises a fixing part 2B, an arc running part 2C and a folded part 2F connecting the above-mentioned two parts into an integral body.
  • the arc running part 2C has a slot 2a wherein the fixed contact point 1A is disposed.
  • the fixing part 2B of the arc runner 2 is electro-conductively fixed to the intermediate part 11a of the fixed conductor 1 by a rivet 3, spot-welding, or the like means.
  • the moving conductor 4 is movably held by a known circuit breaker mechanism at the opposite end part to the fixed contact point 4A, which touches with and departs from the fixed contact point 1A.
  • the arc extinguisher 5 comprises known plural deionization plates and is disposed in such a space S as being in front of the moving course of the moving contact point 4A to carry out known arc extinguishing action.
  • the arc is driven to the far end tip part 2c of the arc runner 2, and is cut into pieces by the deionizer plates of the arc extinguisher 5.
  • the above-mentioned circuit breaker has a problem that undesirable inverse arc-driving force in a direction of arrow C was induced by a stray magnetic flux induced by a current flowing in the direction of arrow B in the upright part 11b. And hence, intended quick shifting of the arc current from the arc path between the contact points 4a and 1a to the arc path between the arc runner 2 and the end tip 4c of the moving conductor 4 is obstracted, thereby lowering the circuit breaking ability.
  • the present invention aims to provide an improved circuit breaker being capable of improving the circuit breaking ability.
  • FIG.1 and FIG.1A show a principal part of a first embodiment of the present invention.
  • the circuit breaker of the first embodiment comprises a fixed conductor 1 having a contact point 1A on one end thereof, an arc runner 2 fixed to the fixed conductor 1, a moving conductor 4 having a moving contact point 4A on its moving end part, or in other words near the moving end of the moving conductor 4, and an arc extinguisher 5.
  • the circuit breaker in accordance with the present invention comprises a rise up member 2D, which is made of conductive substance, such as copper or iron, and the rise up member 2D is electro-conductively connected to the fixed conductor 1 by rivetting or spot-welding or the like means.
  • the fixed conductor has a curved part 1c consisting of an intermediate part 11a and a rise up part 11b.
  • the upper end of the rise up part 11b is integrally connected to a power source side lead 1b.
  • the fixed contact point 1A is electro-conductively fixed on an elevated holder part 1a of the fixed conductor 1.
  • the elevated holder part 1a and the intermediate part 11a are made integrally.
  • the arc runner 2 comprises a fixing part 2B, an arc running part 2C and a folded part 2F connecting the above-mentioned two parts into an integral body.
  • the arc running part 2C has a slot 2a wherein the fixed contact point 1A is disposed.
  • the fixing part 2B of the arc runner 2 is electro-conductively fixed to the intermediate part 11a of the fixed conductor 1 by a rivet 3, spot-welding, or the like means.
  • the rise up member 2D may be configurated integral to the arc runner 2 by extending the fixing part 2B and folding it upward to form the rise up part 2D, as shown in the example of FIG.1 and FIG.1A.
  • the rivet 3 or spot-welding means is for fixing the fixing part 2B of the arc runner 2 to the intermediate part 11a of the fixed conductor 1.
  • the above-mentioned rise up member 2D constitutes an arc retainer for retaining the arc there, thereby to prevent the arc from running excessively outside beyond the arc extinguisher 5.
  • the moving conductor 4 is movably held by a known circuit breaker mechanism at the opposite end part to the fixed contact point 4A, which touches with and departs from the fixed contact point 1A to break and connect a circuit.
  • the arc extinguisher 5 comprises known plural deionization plates and is disposed in such a space S as is in front of moving path of the moving contact point 4A to carry out known arc extinguishing action.
  • the arc is driven to the far end tip part 2c of the arc runner 2, and is cut into many pieces by the deionizer plates of the arc extinguisher 5.
  • the rise up member 2D of a conductive substance such as copper or iron is provided, being connected to the fixed conductor 1, the rise up member 2D serves as the arc retainer. Since the top face of the rise up member 2D has a substantially horizontal face 2d, the arc A which runs rightwards from the fixed contact point 1A on the arc runner part 2C finally jumps on the top face 2d of this arc retainer 2D, thereby forming the retention arc A1 as shown by the solid lines. Accordingly, undesirable excessive arc running to the end tip 2c of the arc runner 2C and subsequent shifting on the power source side lead 1b, which has been hitherto observed, is prevented. Hence, satisfactory arc extinguishing by the arc extinguisher 5 is achievable.
  • the arc retainer 2D is preferably configurated such that the top edge 2d protrudes above a virtual plane which is an extension of the upper surface (arc running surface) near the end part 2c of the arc running part 2C.
  • the undesirable electromagnetic effect by a large current which flows in the upright part 11b from the power source side 1b to the fixed contact point 1A, can be shielded. Therefore, no undesirable electromagnetic effect is given to the arc A0 which is between the fixed contact point 1A and the moving contact point 4A at the initial state of opening of the moving conductor 4. Accordingly, the arc A0 can be smoothly commuted from the arc path between the fixed contact point 1A and the moving contact point 4A to the runner arc path between the runner part 2C and end tip part 4c. And thereby, circuit breaking characteristic of the circuit breaker is satisfactorily improved.
  • the ferromagnetic shield 2D can serve simultaneously as the arc retainer and also as the magnetic shield, when it is made of a ferromagnetic substance.
  • the magnetic shield 2D is disposed in close proximity to the upright part 11b, the effect of magnetic shield becomes prominent.
  • FIG.1, FIG.1A, FIG.2 and FIG.2A by forming the magnetic shield 2D in integral configuration with the arc runner 2, the effect of the arc retainer and the magnetic shield is obtainable, only by slight addition of the rise up member 2D to the fixing part 2B of the arc runner 2, and its manufacturing is easy and economical.
  • the position of the top face 2d of the rise up member 2D should be protruding above the virtual plane of extension of the runner part 2C; whereas when the effect of the magnetic shield is mainly required, the top face 2d of the rise up part 2D may be offset from the virtual plane as shown in FIG.2 and FIG.2A.
  • the rise up member 2D is made by continuously extending the fixing part 2B of the arc runner 2 and uprightly bending its end to form the rise up member 2D.
  • the rise up member 2D may be produced as a separate piece from the arc runner 2 by separately rivetting or spot-welding it onto the fixed conductor 1.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Claims (6)

  1. Disjoncteur comprenant :
       un conducteur fixe (1) connecté par une extrémité à un côté source de courant ;
       un point de contact fixe (1A) prévu à l'autre extrémité dudit conducteur fixe (1) ;
       un conducteur de l'arc (2) qui est un conducteur ayant : une partie de fixation (2B) qui est fixée de manière électroconductrice à une partie intermédiaire (11a) dudit conducteur fixe (1), une partie conductrice de l'arc (2C), qui a une fente (2A) où est disposé ledit point de contact fixe (1A), et une partie repliée (2F) qui relie ladite partie de fixation (2B) et ladite partie conductrice de l'arc (2C) ;
       un conducteur mobile (4) ayant un point de contact mobile (4A) à sa partie extrême mobile (4c) ; et
       un organe dressé (2D) qui est un conducteur en un matériau ferromagnétique ayant : une partie de fixation (2B), qui est fixée de manière électroconductrice à ladite partie intermédiaire (11A), une partie dressée qui monte en s'étendant sensiblement dans une direction perpendiculaire par rapport à ladite partie intermédiaire (11a) de manière que son extrémité (2d) soit disposée en une position au-delà d'une extrémité (2c) de ladite partie conductrice de l'arc (2C) avec un espace donné d'air (g) entre eux,
       caractérisé en ce que
       ledit organe dressé (2D) protège magnétiquement un espace conducteur de l'arc d'une partie dressée (11b) du côté source de courant dudit conducteur fixe (1), qui se trouve derrière ledit organe dressé (2D), où ledit organe dressé (2D) est disposé très près de ladite partie dressée (11b) du côté source de courant dudit conducteur fixe (1).
  2. Disjoncteur selon la revendication 1, où un angle aigu est défini entre ladite partie de fixation (2B) et ladite partie conductrice de l'arc (2C).
  3. Disjoncteur selon la revendication 1 ou 2, où
       ledit organe dressé (2D) a une face extrême (2d) qui est dans une direction sensiblement tournée vers une extrémité (4c) dudit conducteur mobile (4) pendant l'ouverture dudit disjoncteur pour retenir un arc entre lesdites faces extrêmes (2d) de ladite extrémité (4c) à ladite ouverture.
  4. Disjoncteur selon la revendication 3, où
       ladite face extrême (2d) est disposée pour dépasser au-delà d'un plan vituel qui est une extension de la surface de ladite partie conductrice de l'arc (2C) à proximité de la partie extrême (2c).
  5. Disjoncteur selon l'une quelconque des revendications 1 à 4, où
       ledit organe dressé (2D) fait corps avec ledit conducteur de l'arc (2) en formant lesdites parties de fixation (2B) des deux organes en une partie.
  6. Disjoncteur selon l'une quelconque des revendications 1 à 5, où
       ledit conducteur fixe (1) a une partie courbée (1c) et
       ledit point de contact fixe (1A) est prévu en un emplacement qui est sur la surface supérieure de ladite partie mobile (1c) et qui est éloigné dudit organe dressé (2D).
EP86108763A 1985-07-02 1986-06-27 Disjoncteur Expired EP0207458B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP10200785 1985-07-02
JP102007/85 1985-07-02
JP102008/85 1985-07-02
JP10200885U JPS629338U (fr) 1985-07-02 1985-07-02

Publications (3)

Publication Number Publication Date
EP0207458A2 EP0207458A2 (fr) 1987-01-07
EP0207458A3 EP0207458A3 (en) 1989-05-31
EP0207458B1 true EP0207458B1 (fr) 1992-03-04

Family

ID=26442760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108763A Expired EP0207458B1 (fr) 1985-07-02 1986-06-27 Disjoncteur

Country Status (2)

Country Link
US (1) US4689588A (fr)
EP (1) EP0207458B1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5313031A (en) * 1990-12-28 1994-05-17 Mitsubishi Denki Kabushiki Kaisha Electric switch gear with improved stationary contact configuration
FR2714520B1 (fr) * 1993-12-24 1996-01-19 Telemecanique Appareil électrique interrupteur à contacts séparables.
JP3099690B2 (ja) * 1995-08-03 2000-10-16 富士電機株式会社 回路遮断器
FR2788164B1 (fr) * 1998-12-30 2001-02-16 Schneider Electric Ind Sa Appareillage electrique de coupure dont un organe de contact est muni d'une fente
RU2149475C1 (ru) * 1999-06-01 2000-05-20 Закрытое акционерное общество "ЗЭТА" Дугогасительный элемент
US6300586B1 (en) * 1999-12-09 2001-10-09 General Electric Company Arc runner retaining feature
US7716816B2 (en) * 2006-09-22 2010-05-18 Rockwell Automation Technologies, Inc. Method of manufacturing a switch assembly
US7551050B2 (en) * 2006-09-22 2009-06-23 Rockwell Automation Technologies, Inc. Contactor assembly with arc steering system
US8947181B2 (en) * 2012-11-15 2015-02-03 Eaton Corporation Arc runner assembly and circuit interrupter
FR3027728B1 (fr) * 2014-10-22 2017-12-08 Socomec Sa Dispositif de coupure d'arc electrique
CN208240528U (zh) 2018-04-19 2018-12-14 施耐德电气工业公司 静触头组件和相应的开关触头

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1260000B (de) * 1966-07-04 1968-02-01 Wtz Elektroapp Dresden Wissens Lichtbogenkammer fuer elektrische Schuetze kleinerer Stromstaerken
FR2378344A1 (fr) * 1977-01-25 1978-08-18 Telemecanique Electrique Piece de soufflage
KR860002080B1 (ko) * 1982-01-28 1986-11-24 카다야마히도 하지로 전력 개폐장치
DE3375857D1 (en) * 1982-11-10 1988-04-07 Mitsubishi Electric Corp Switch with arc-extinguishing means
WO1985002711A1 (fr) * 1983-12-07 1985-06-20 Mitsubishi Denki Kabushiki Kaisha Commutateur d'alimentation
FR2569304B1 (fr) * 1984-08-15 1990-12-28 Mitsubishi Electric Corp Interrupteur de circuit

Also Published As

Publication number Publication date
EP0207458A3 (en) 1989-05-31
EP0207458A2 (fr) 1987-01-07
US4689588A (en) 1987-08-25

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